Article
Materials Science, Multidisciplinary
Saber Ghannadi, Hossein Abdizadeh, Amirhossein Rakhsha, Mohammad Reza Golobostanfard
Summary: The study validates the role of titania (TiO2) nanorod arrays (NRAs) synthesized via sol-electrophoretic deposition in enhancing the efficiency of dye-sensitized solar cells (DSSCs). Results show that NRAs can significantly increase the efficiency of DSSC.
MATERIALS CHEMISTRY AND PHYSICS
(2021)
Article
Chemistry, Multidisciplinary
Muhammad Saleem, Ali Algahtani, Saif Ur Rehman, Muhammad Sufyan Javed, Kashif Irshad, Hafiz Muhammad Ali, Muhammad Zeeshan Malik, Amjad Ali, Vineet Tirth, Saiful Islam
Summary: The doping of Cu and Sm in ZnO nanorod arrays can enhance their structural, optical, and photovoltaic properties, leading to improved efficiency of dye-sensitized solar cells. The diameter of the nanorods is dependent on the concentration of Cu and Sm, while the density of the nanorod arrays remains relatively constant.
Review
Chemistry, Multidisciplinary
Deepak Joshy, Soumya B. Narendranath, Yahya A. Ismail, Pradeepan Periyat
Summary: TiO2 nanomaterials have been widely studied as photoanode materials in dye-sensitized solar cells due to their non-toxicity, high electron transport rates, and fine tuneable band gap. This review focuses on the modification of TiO2 photoanodes through doping and morphological variations, and highlights the impact of various morphologies on photoanode design.
NANOSCALE ADVANCES
(2022)
Article
Materials Science, Multidisciplinary
Khaled HamdaninAff, Samia BelhoussenAff, Fatma Zohra TighiltnAff, Kahina LasminAff, Denis ChaumontnAff, Sabrina Sam
Summary: This study investigates the influence of TiO2 morphology on the performance of dye-sensitized solar cells. It is found that a proper content of nanotubes effectively connects with nanoparticles, facilitating charge transport.
JOURNAL OF MATERIALS RESEARCH
(2022)
Article
Chemistry, Physical
Jun Guo, Chunsheng Ding, Wei Gan, Peng Chen, Miao Zhang, Zhaoqi Sun
Summary: A SERS substrate based on black phosphorus quantum dots (BPQDs) and silver nanoparticles co-sensitized titanium dioxide nanorod arrays has been successfully fabricated for limit trace detection test. The substrate shows high sensitivity, good uniformity, and excellent repeatability and stability, making it a promising candidate for SERS applications. The improved SERS activity is attributed to the synergistic effect of BPQDs, silver nanoparticles, and titanium dioxide nanorod arrays.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Materials Science, Multidisciplinary
Fengjuan Miao, Fuchen Chu, Bingcheng Sun, Bairui Tao, Peng Zhang, Yu Zang, Paul K. Chu
Summary: This study presents the design and fabrication of a photoanode composed of Au/SnS/TiO2 sensitized with natural dye for dye-sensitized solar cells (DSSCs). By calcination, a layer of spherical nano-TiO2 is prepared, and a layer of nano-SnS is deposited on the TiO2 photoanode using the continuous ion layer adsorption reaction (SILAR). The sensitized Au nanoparticles exhibit enhanced localized surface plasmon resonance (LSPR) effects and electron trapping ability, resulting in improved electron mobility and reduced electron recombination in the DSSC.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2022)
Article
Engineering, Electrical & Electronic
Haizheng Hu, Chao Wu, Chenran He, Jingqin Shen, Yuexing Cheng, Fengmin Wu, Shunli Wang, Daoyou Guo
Summary: In this study, a photovoltaic-type DUV photodetector based on α-Ga2O3-TiO2 core-shell NRA was successfully fabricated, demonstrating efficient transport and separation of photogenerated carriers.
ACS APPLIED ELECTRONIC MATERIALS
(2022)
Article
Materials Science, Ceramics
Faxiang Lu, Xiumin Xu, Yang Cao, Xingfu Zhou
Summary: The electron transport layer (ETL) plays a crucial role in perovskite solar cell (PSC) devices. This study utilized rutile TiO2 nanorod arrays (TiO2 NAs) synthesized by a one-step hydrothermal method as the ETL in carbon-based PSCs, leading to improved device performance and higher power conversion efficiency.
CERAMICS INTERNATIONAL
(2023)
Article
Chemistry, Physical
Jun Guo, Miao Zhang, Zhuangzhuang Yin, Chunsheng Ding, Peng Chen, Wei Gan, Hai Yu, Zhaoqi Sun
Summary: In this study, high-performance surface-enhanced Raman scattering (SERS) substrates and photocatalysts were successfully synthesized using TiO2 nanorod arrays co-sensitized with black phosphorus nanosheets and Ag nanoparticles. The resulting BP/Ag/TNR substrate exhibited excellent SERS sensitivity for the detection of organic pollutants, as well as self-cleaning abilities through photocatalytic degradation. The improved performance was attributed to the formation of high-density hot spots, expansion of optical capture abilities, and enhancement of charge transfer properties.
APPLIED SURFACE SCIENCE
(2022)
Article
Multidisciplinary Sciences
Brishty Deb Choudhury, Chen Lin, Sk Md Ali Zaker Shawon, Javier Soliz-Martinez, Hasina Huq, Mohammed Jasim Uddin
Summary: The study presents an improved photoanode with hierarchical microstructure of photoactive TiO2, along with the deposition of plasmonic nanoparticle Ag using photoreduction method. The branched structure of the photoanode increases dye loading, while Ag nanoparticles play multiple roles in enhancing light-to-current conversion efficiency. This novel design shows remarkably higher photon conversion efficiency compared to traditional structures.
SCIENTIFIC REPORTS
(2021)
Article
Chemistry, Analytical
Kamalesh Debnath, Tanmoy Majumder, Suvra Prakash Mondal
Summary: The photoelectrochemical properties of N-doped graphene quantum dots (NGQDs) sensitized TiO2 nanorods (NRs) were studied. NGQDs were prepared using a facile and low temperature solvothermal process. TiO2 NRs were grown on FTO-coated glass substrates using a hydrothermal method. The attachment of NGQDs onto TiO2 NRs greatly enhanced the photoresponse and PEC performance. The NGQDs sensitized TiO2 NRs exhibited improved photoconversion efficiency and incident photon-to-current conversion efficiency compared to pristine TiO2 NRs.
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
(2022)
Article
Energy & Fuels
Guanda Zhou, Ting Zhao, Oumin Wang, Xin Xia, Jia Hong Pan
Summary: By adjusting the concentration of the Ti precursor and reaction time during hydrothermal process, the density and diameter of rutile TiO2 nanorod arrays vertically aligned on conductive fluorine-doped tin oxide glass can be optimized for photocatalysis. Quantum dots of V2VI3 (V = Bi; VI = Se, Te) are then used as sensitizers to enhance the visible-light response of TiO2, leading to increased photocurrent, improved light harvesting properties, and enhanced charge carrier separation capability.
JOURNAL OF PHYSICS-ENERGY
(2021)
Article
Materials Science, Multidisciplinary
Bandana Ranamagar, Isaac Abiye, Fasil Abebe
Summary: The Rhodamine-6G derivative Rhd and its metal complexes with aluminum and chromium ions were synthesized and characterized using UV-vis and fluorescence spectroscopy. Dye-sensitized solar cells (DSSCs) were fabricated with Rhd and the metal complexes, and their solar-to-electric power efficiencies were determined through current-density measurements and Electrochemical Impedance Spectroscopy (EIS). The Rhd and Cr3+-sensitized solar cell showed the highest solar to electric power efficiency at 0.16%.
Article
Chemistry, Inorganic & Nuclear
Hao Huang, Yu-Xuan Li, Guo-Jing Jiang, Hui-Long Wang, Wen-Feng Jiang
Summary: The construction of a dye-sensitized BiOCl/R-TiO2 heterojunction system proved to be an effective strategy for enhancing photocatalytic potential, with the synergistic effects of efficient RhB-photosensitization, enhanced heterojunction effect, and suitable conduction band match between BiOCl and R-TiO2 facilitating improved electron transfer and charge separation for pollutant degradation.
INORGANIC CHEMISTRY
(2021)
Article
Chemistry, Multidisciplinary
Dongting Wang, Yifan Hu, Yuchen Li, Xiangchen Jia, Yuzhen Fang, Zhiliang Zhang, Xianxi Zhang
Summary: The study introduces a novel and uncomplicated wet-chemical method at room temperature for the self seeding preparation of three-dimensional hierarchically branched rutile TiO2 nanostructures. The technique utilizes titanate nanotubes as the precursor and employs a dissolution/precipitation/recrystallization process to obtain spindle-like rutile TiO2 and intermediate anatase phase, which serve as the substrates and nucleation precursor to grow the branches, resulting in the formation of 3D hierarchically branched rutile TiO2. When used as the photoanode in dye-sensitized solar cells, the hierarchical TiO2 exhibits a significantly improved power conversion efficiency of 8.32%, surpassing a typical TiO2 (P25) nanoparticle-based reference cell (eta = 5.97%) with the same film thickness. The exceptional performance is attributed to the effective combination of robust light scattering, substantial dye loading, and fast electron transport in the hierarchically branched rutile TiO2 nanostructures.
Article
Chemistry, Physical
Yan Huang, Honggang Lu, Bingnan Wang, Wenbo He, Hongzhou Dong, Lina Sui, Zhixing Gan, Shuai Ma, Beili Pang, Lifeng Dong, Liyan Yu
Summary: Black phosphorus as a promising catalyst for solar hydrogen production has attracted attention, and the addition of MoS2 as a cocatalyst can significantly improve its photocatalytic performance; The 10/0.5 ratio of BP/MoS2 catalyst shows the highest photocatalytic hydrogen evolution performance.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Materials Science, Ceramics
Qian Zhang, Chaozhe Zhang, Fengjian Yang, Jianhua Yu, Hongzhou Dong, Jing Sui, Yingjie Chen, Liyan Yu, Lifeng Dong
Summary: This study develops a method to fabricate flexible fiber-shaped supercapacitors, which exhibit high performance with good capacitance and cycling stability. The optimized device design and process provide desirable solutions for flexible and wearable energy storage devices.
CERAMICS INTERNATIONAL
(2022)
Article
Chemistry, Physical
Suwei Dong, Yunfan Xu, Chenjie Wang, Cihui Liu, Jinlei Zhang, Yunsong Di, Liyan Yu, Lifeng Dong, Zhixing Gan
Summary: Solar steam generation technology can be used for seawater desalination and wastewater purification, and by designing special structures and developing a new type of water harvester, the evaporation rate can be increased and the quality of desalinated water improved.
JOURNAL OF MATERIALS CHEMISTRY A
(2022)
Article
Chemistry, Physical
Xiuzhe Wang, Jing Sui, Zongzhao Li, Xinyue Jiang, Qian Zhang, Jianhua Yu, Lina Sui, Lifeng Dong
Summary: In this study, NiFe layered double hydroxides (LDHs) nanosheets were successfully prepared, and self-supporting Ni2P(O)-Fe2P(O)/CeOx nanosheets with excellent catalytic performance were in situ synthesized. This catalyst exhibits more active sites and fast electron transport in alkaline solution.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Electrochemistry
Chong Gong, Xiangyu Meng, Xing Chen, Yingjie Chen, Qiong Sun, Beili Pang, Qian Zhang, Jianguang Feng, Liyan Yu, Lifeng Dong
Summary: In this study, iron, cobalt, nickel, and nitrogen doped-carbon nanospheres were synthesized using a microemulsion method. The content and ratio of different metals in the doped carbon material can be adjusted by adding different amounts of metal ions. The multi-doped carbon nanospheres showed improved conductivity, enhanced catalytic properties, and superior performance in oxygen reduction reaction and oxygen evolution reaction compared to singly doped carbon nanospheres. The co-doping of iron, cobalt, nickel, and nitrogen facilitated the combination of metal and nitrogen and improved the conductivity and bifunctional activities of the carbon material.
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
(2022)
Article
Materials Science, Ceramics
Haiying Liu, Jianguang Feng, Lifeng Dong
Summary: Traditional trial and error methods are inefficient when dealing with a large number of candidates, but machine learning can rapidly discover functional materials and reveal the relationship between structures and properties. In this study, a machine learning model was developed to predict the band gaps of double perovskite oxide (DPO) materials for solar cells, resulting in the screening of 236 promising DPOs with suitable band gaps. The developed model showed excellent predictive performance and confirmed previous research findings through statistical analysis.
CERAMICS INTERNATIONAL
(2022)
Article
Electrochemistry
Xing Chen, Di Chen, Guofu Li, Pengfei Sha, Jianhua Yu, Liyan Yu, Lifeng Dong
Summary: This study presents a simple strategy to derive FeNi-incorporated N-doped carbon nanotube catalysts for oxygen reduction reactions (ORR) and oxygen evolution reactions (OER). These catalysts exhibit superior performance and have been successfully applied in rechargeable Zn-air batteries and all-solid-state Zn-air batteries.
ELECTROCHIMICA ACTA
(2022)
Article
Chemistry, Physical
Jianhua Yu, Xiancai Pang, Qunchao Yin, Di Chen, Hongzhou Dong, Qian Zhang, Jing Sui, Lina Sui, Lifeng Dong
Summary: A self-supporting porous electrode material with abundant electrochemical active sites was constructed by depositing zeolitic imidazolate frameworks and subsequently electrodepositing nickel-cobalt sulfides. The resulting material exhibited excellent electrochemical characteristics and outstanding long-term cycle stability due to its cross-porous structure nanosheet arrays. Additionally, a hybrid supercapacitor with high energy density was fabricated using the electrode material.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Electrochemistry
Xiangyu Meng, Zhihuan Wang, Guoliang Yu, Xinbin Wang, Yingjie Chen, Liyan Yu, Lifeng Dong
Summary: Rational design of surface plasmon-enhanced electrocatalysts can effectively integrate solar energy into fuel cells. In this study, iron and nitrogen codoped carbon nanoparticles were used to absorb and photo-reduce silver ions in solution, forming silver nanoparticles on the carbon surface. The resulting material, Ag-Fe/NC, exhibited superior catalytic performance for the oxygen reduction reaction, even surpassing commercial platinum catalysts. Additionally, Ag-Fe/NC showed excellent long-term stability and resistance to methanol in alkaline conditions.
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
(2022)
Article
Chemistry, Multidisciplinary
Wei Guan, Lin Zhang, Peng Wang, Ying Wang, Haoyu Wang, Xingchen Dong, Ming Meng, Lina Sui, Zhixing Gan, Lifeng Dong, Liyan Yu
Summary: Doping impure atoms or introducing crystal defects can enhance the photocatalytic activity of semiconductors. In this study, a molybdenum-doped thin ZnIn2S4 material was prepared using a one-pot solvothermal method, in which the coordination of Mo doping and S vacancies enhanced visible light absorption, facilitated the separation of photogenerated carriers, and provided active sites for photocatalytic reactions. The optimized Mo-doped Sv-ZnIn2S4 exhibited a significantly higher hydrogen evolution rate compared to the original ZnIn2S4, demonstrating a new strategy for developing efficient 2D atomic photocatalysts for hydrogen evolution.
Article
Chemistry, Physical
Chenhao Xia, Jianguang Feng, Chenchen Ma, Herui Xi, Na Song, Hongzhou Dong, Liyan Yu, Lifeng Dong
Summary: In this study, density functional theory was used to investigate the differences in catalytic activities between pyridinic-N and pyrrolic-N doped graphene quantum dots (GQDs) for oxygen reduction reaction, and the influence of four ions/groups: OH-, H3O+, OH and H3O on their electronic properties. Free energy change calculations show that pyridinic-N doped GQDs (pN-GQDs) exhibit better catalytic activities than pyrrolic-N doped GQDs (prN-GQDs). Furthermore, the catalytic activity of both pN-GQDs and prN-GQDs can be enhanced by functionalizing with OH and H3O groups, which modify the electronic structures of the GQDs and control the adsorption strength of reactants. These findings provide insights into the effects of different N doping configurations and adsorbed species on electrocatalytic activities, and offer theoretical guidelines for designing and developing carbon-based electrocatalysts for oxygen reduction reaction in fuel cells and metal-air batteries.
MOLECULAR CATALYSIS
(2023)
Article
Chemistry, Physical
Andreas Stein, Minog Kim, Brian D. Spindler, Lifeng Dong
Summary: A major limitation of lithium-ion batteries is the irreversible loss of 5-20% lithium during the first charge-discharge cycle, reducing the battery capacity. This study found that Li8ZrO6 (LZO) can serve as a pre-lithiation additive to compensate for the capacity loss. The optimal loading of 5 wt % LZO significantly improved the reversible specific capacity and capacity retention.
ACS APPLIED ENERGY MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Shuai Ma, Fengjin Xia, Ruibin Jia, Zhenzong Sha, Jingru Tian, Liyan Yu, Lifeng Dong
Summary: In this study, adding Cr doping effectively suppresses the generation of Fe3+ vacancies and oxygen vacancies in BiFe1-xCrxO3 (BFCO). The BFCO/NiO heterojunction achieves optimized photoresponse time, with significantly reduced response time constants compared to pure-BFO/NiO and single-layer BFCO film. This research successfully demonstrates a visible-light photodetector based on BFCO, with superior performance.
MATERIALS TODAY CHEMISTRY
(2023)
Article
Physics, Applied
Ying Wang, Qingfeng Gui, Peng Wang, Wei Guan, Xingchen Dong, Haoyu Wang, Hongzhou Dong, Lina Sui, Zhixing Gan, Lifeng Dong, Liyan Yu
Summary: Despite extensive efforts, there is still a high demand for lead-free, low toxicity, efficient, and stable blue fluorescent materials. Cs2NaInCl6 double perovskite (DP) is considered a promising candidate for solid-state lighting due to its low toxicity and good stability. Here, Mg-doped Cs2NaInCl6 DPs were prepared using a solvothermal method. The Mg2+-doped Cs2NaInCl6 DPs showed independent blue photoluminescence (PL) at 445 nm with a large Stokes shift (129.5 nm), long PL lifetime (10.44 μs), and a huge Huang-Rhys factor (40.2), indicating the presence of self-trapped excitons. After optimizing the reaction conditions and doping concentration, a high photoluminescence quantum yield of 86.98% was achieved. Moreover, the Mg-doped Cs2NaInCl6 DPs exhibited excellent resistance to irradiation and moisture, which can address the limitations of current blue emitting materials.
APPLIED PHYSICS LETTERS
(2023)
Article
Engineering, Environmental
Likun Sun, Qiong Sun, Yingchao He, Jianguang Feng, Zhixing Gan, Liyan Yu, Lifeng Dong
Summary: A composite photocatalyst is developed by combining graphene-like carbon nitride (g-C3N4) with black phosphorus quantum dots (BPQDs) to address polyvinyl alcohol (PVA) waste pollution. The composite photocatalyst shows significantly enhanced photocatalytic activity, with PVA degradation efficiency increasing from 27.1% (pure g-C3N4) to 85.9% under solar light simulator irradiation for 20 min. Experimental results and theoretical calculations suggest the formation of a Z-scheme route at the gC3N4/BPQDs interface, facilitating photoinduced electron transfer and improving PVA degradation.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Chemistry, Physical
Sergey Yu. Ketkov, Sheng-Yuan Tzeng, Elena A. Rychagova, Anton N. Lukoyanov, Wen-Bih Tzeng
Summary: Metallocenes, including methylcobaltocene, play important roles in various fields of chemistry. The ionization energy and vibrational structure of (Cp ')(Cp)Co can be influenced by introducing methyl substituents. The mass-analyzed threshold ionization spectrum and DFT calculations provide accurate information about the properties and transformations of (Cp ')(Cp)Co.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2024)
Review
Chemistry, Physical
Qifeng Mu, Jian Hu
Summary: Polymer mechanochemistry has experienced a renaissance due to the rapid development of mechanophores and principles governing mechanochemical transduction or material strengthening. It has not only provided fundamental guidelines for converting mechanical energy into chemical output, but also found applications in engineering and smart devices.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2024)
Article
Chemistry, Physical
Da Hye Yang, Francesco Ricci, Fredrik L. Nordstrom, Na Li
Summary: Through systematic evaluation of the oiling-out behavior of procaine, we identified both stable and metastable liquid-liquid phase separation, and established phase diagrams to assist in rational selection of crystallization strategies.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2024)
Article
Chemistry, Physical
Vikki Anand Varma, Simmie Jaglan, Mohd Yasir Khan, Sujin B. Babu
Summary: Designing engineering structures like nanocages, shells, and containers through self-assembly of colloids is a challenging problem. This work proposes a simple model for the subunit, which leads to the formation of monodispersed spherical cages or containers. The model with only one control parameter can be used to design cages with the desired radius.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2024)
Article
Chemistry, Physical
Hainan Jiang, Yaolong He, Xiaolin Li, Zhiyao Jin, Huijie Yu, Dawei Li
Summary: The cycling lifespan and coulombic efficiency of lithium-ion batteries are crucial for high C-rate applications. The Li-ion concentration plays a crucial role in determining the mechanical integrity and structural stability of electrodes. This study focuses on graphite as the working electrode and establishes an experimental system to investigate the mechanical properties of composite graphite electrode at different C-rates. Considering the effect of Li-ion concentration in stress analysis is found to be significant.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2024)
Article
Chemistry, Physical
Zhiye Wang, Yunchuan Li, Mingjun Sun
Summary: This study investigates the influence of intramolecular pi-pi interactions on the electronic transport capabilities of molecules. By designing and analyzing three pi-conjugated molecules, the researchers observe that different pi-conjugated structures have varying effects on electron transport. The findings provide a theoretical foundation for designing single-molecule electronic devices with multiple electron channels based on intramolecular pi-pi interactions.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2024)
Article
Chemistry, Physical
Yuandong Xu, Haoyang Feng, Chaoyang Dong, Yuqing Yang, Meng Zhou, Yajun Wei, Hui Guo, Yaqing Wei, Jishan Su, Yingying Ben, Xia Zhang
Summary: Hollow MoS2 cubes and spheres were successfully synthesized using a one-step hydrothermal method with the hard template method. The hollow MoS2 cubes exhibited higher specific capacitance and energy density compared to the hollow MoS2 spheres. The symmetrical supercapacitors assembled with these hollow structures showed good performance and high capacity retention after multiple cycles. These findings suggest that controlling the pore structure and surface characteristics of MoS2 is crucial for enhancing its electrochemical properties.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2024)
Article
Chemistry, Physical
Ainhoa Oliden-Sanchez, Rebeca Sola-Llano, Joaquin Perez-Pariente, Luis Gomez-Hortiguela, Virginia Martinez-Martinez
Summary: The combination of photoactive molecules and inorganic structures is important for the development of advanced materials in optics. In this study, bulky dyes were successfully encapsulated in a zeolitic framework, resulting in emission throughout the visible spectrum.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2024)
Article
Chemistry, Physical
Miaomiao Zhang, Cunyuan Pei, Qiqi Xiang, Lintao Liu, Zhongxu Dai, Huijuan Ma, Shibing Ni
Summary: The design of a solid electrolyte interphase (SEI) plays a crucial role in improving the electrochemical performance of anode materials. In this study, lithium difluoro(oxalate)borate (LiDFOB) is used as an electrolyte additive to form a protective SEI film on Li3VO4 (LVO) anodes. The addition of LiDFOB results in a dense, uniform, stable, and LiF-richer SEI, which enhances the Li-ion storage kinetics. The generated SEI also prevents further decomposition of the electrolyte and maintains the morphology of LVO anodes during charge/discharge processes. This work demonstrates the effectiveness of LiDFOB as a multi-functional additive for LiPF6 electrolytes and provides insights into SEI construction for high-performance LVO anodes.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2024)
Article
Chemistry, Physical
B. V. Andryushechkin, T. V. Pavlova, V. M. Shevlyuga
Summary: The atomic structure of the Ag(111)-p(4 x 4)-O phase was reexamined and two phases with the same periodicity were discovered. It was demonstrated that the accepted Ag6 model is incompatible with high-resolution oxygen-sensitive STM images.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2024)
Article
Chemistry, Physical
S. L. Romo-Avila, D. Marquez-Ruiz, R. A. Guirado-Lopez
Summary: In this study, we used density functional theory (DFT) calculations to investigate the interaction between model graphene oxide (GO) nanostructures and chlorine monoxide ClO. We aimed to understand the role of this highly oxidizing species in breaking C-C bonds and forming significant holes on GO sheets. Our results showed that C-C bonds in a single graphene oxide sheet can be broken through a simple mechanism involving the dissociation of two chemically attached ClO molecules. The formation of carbonyl groups and holes on the GO surface was also observed. This study provides important insights into the degradation of carbon nanotubes and the stability of GO during the myeloperoxidase (MPO) catalytic cycle.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2024)
Article
Chemistry, Physical
Alberto Garcia-Fernandez, Birgit Kammlander, Stefania Riva, Hakan Rensmo, Ute B. Cappel
Summary: In this study, the X-ray stability of five different lead halide perovskite compositions (MAPbI3, MAPbCl3, MAPbBr3, FAPbBr3, CsPbBr3) was investigated using photoelectron spectroscopy. Different degradation mechanisms and resistance to X-ray were observed depending on the crystal composition. Overall, perovskite compositions based on the MA+ cation were found to be less stable than those based on FA+ or Cs+. Metallic lead formation was most easily observed in the chloride perovskite, followed by bromide, and very little in MAPbI3. Multiple degradation processes were identified for the bromide compositions, including ion migration, formation of volatile and solid products, as well as metallic lead. CsBr was formed as a solid degradation product on the surface of CsPbBr3.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2024)
Article
Chemistry, Physical
Timofei Rostilov, Vadim Ziborov, Alexander Dolgoborodov, Mikhail Kuskov
Summary: The shock-loading behavior of nanomaterials is investigated in this study. It is found that shock compaction waves exhibit a distinct two-step structure, with the formation of faster precursor waves that travel ahead of the main compaction waves. The complexity of the shock Hugoniot curve of the tested nanomaterial is described, and the effect of initial porosity on the compressed states is demonstrated.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2024)
Article
Chemistry, Physical
Sergey S. Nikitin, Alexander D. Koryakov, Elizaveta A. Antipinskaya, Alexey A. Markov, Mikhail V. Patrakeev
Summary: The stability of La1/3Sr2/3Fe1-xMnxO3-delta, a perovskite-type oxide, under reducing conditions is dependent on the manganese content. Increasing the manganese content leads to a decrease in stability. The behavior of iron and manganese in the oxide shows distinct differences, which can be attributed to the difference in the enthalpy of oxidation reactions. Additionally, the change in the La/Sr ratio affects the concentration of iron and manganese ions.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2024)
Article
Chemistry, Physical
Mosayeb Naseri, Shirin Amirian, Mehrdad Faraji, Mohammad Abdur Rashid, Maicon Pierre Lourenco, Venkataraman Thangadurai, D. R. Salahub
Summary: Inspired by the successful transfer of freestanding ultrathin films of SrTiO3 and BiFeO3, this study assessed the structural stability and investigated the electronic, optical, and thermoelectric properties of a group of two-dimensional perovskite-type materials called perovskenes. The findings revealed that these materials are wide bandgap semiconductors with potential application in UV shielding. Moreover, they exhibit better electrical and thermal conductivity at high temperatures, enabling efficient power generation in thermoelectric devices.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2024)